Comparison

CallOne Softphone vs PBXAPP

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

CallOne Softphone

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CallOne's begleitende Softphone-App zur CallOne-Plattform. Eine SIP-Softphone-App, die Push-Benachrichtigungen, HD-Voice und Video und vieles mehr unterstützt. Darüber hinaus bietet die CallOne-App - Kostenlose Anrufe zwischen App-Nutzern

About

PBXAPP

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PBXAPP is a custom telephonie app. Users can access the PBX through the application. Other than standart features, we are happy to present a costless VoIP application with high-quality free app-to-app calls.

Screenshots

CallOne Softphone4 screens

PBXAPP4 screens

Verdict

The call

CallOne Softphone and PBXAPP are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CallOne Softphone ships an update every 3 months, PBXAPP every 2 months. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

ScorecardNo meaningful differences

CallOne Softphone versus PBXAPP: the parameters behind the verdict, then further details
Parameter	CallOne Softphone	PBXAPP
Price	Free	Free
Update frequency	Every 3 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone	iPhone
Requires iOS	16.0	16.0
Further details — not scored
Size	97 MB	109 MB
Age rating	4+	17+
Developer	CallOne GmbH	Outbox AG

In-app purchases

None

CallOne Softphone

No in-app purchases

None

PBXAPP

No in-app purchases

Questions

Is CallOne Softphone free?

CallOne Softphone is free to download, with no in-app purchases.

Is PBXAPP free?

PBXAPP is free to download, with no in-app purchases.

Do CallOne Softphone or PBXAPP have ads?

Neither CallOne Softphone nor PBXAPP shows ads.

Which is updated more often, CallOne Softphone or PBXAPP?

CallOne Softphone ships an update every 3 months, and PBXAPP every 2 months. Most recently, CallOne Softphone was updated on September 21, 2026 and PBXAPP on September 9, 2026.